SuperTokens is an open source authentication solution offering features like: Different types of login: Email / password, Passwordless (OTP or Magic link based).

SuperTokens.com

```
                                                 
                                              ^
  symbol:   class CookieHandler
  location: class MainApplication.CustomJavaNetCookieJar
/Users/Stephano/Development/code/app/euclid/android/app/src/main/java/com/euclid/MainApplication.java:140: error: cannot find symbol
           } catch (IOException e) {
                    ^
  symbol:   class IOException
  location: class MainApplication.CustomJavaNetCookieJar
/Users/Stephano/Development/code/app/euclid/android/app/src/main/java/com/euclid/MainApplication.java:147: error: method does not override or implement a method from a supertype
       @Override
       ^
Note: /Users/Stephano/Development/code/app/euclid/android/app/src/debug/java/com/euclid/ReactNativeFlipper.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
```